// PARAMETERS
// op operation sign: 'a'(add), 's'(subtract),
// 'm'(multiply), 'd'(divide)
// bkgclr background color: 'rrggbb'
// ttlclr title line color: 'rrggbb'
// form options selection form object: document.formname
function startSumPlus(op, bkgclr, ttlclr, form)
{
var htmlString = "";
//header and title lines
htmlString += "";
htmlString += "";
htmlString += "SumPlus Exercise Sheet";
// htmlString += "";
htmlString += "";
htmlString += "";
htmlString += "";
htmlString += "";
htmlString += op == 's' ? "Subtracting" :
op == 'm' ? "Multiplying" :
op == 'd' ? "Dividing" :
"Adding" ;
htmlString += "
";
//applet (sumplus.class)
var cols = (parseInt(form.max1.value, 10) >= 10000 || parseInt(form.max2.value, 10) >= 10000)? 2 :
(parseInt(form.max1.value, 10) >= 1000 || parseInt(form.max2.value, 10) >= 1000)? 3 : 4;
var n = form.neqs.value;
var m = n % cols;
if(m > 0) n -= m;
var rows = n / cols;
if(m > 0) rows++;
var ht = rows * (rows <= 1 ? 20 : rows <= 3 ? 35 : (rows >= 4 && rows <= 8) ? 40 : 45);
htmlString += "";
//utility buttons
// htmlString += "";
htmlString += "";
htmlString += "";
htmlString += "";
//write HTML document (to wframe)
parent.wframe.document.open();
parent.wframe.document.write(htmlString);
parent.wframe.document.close();
// document.open();
// document.write(htmlString);
// document.close();
}
function checkNumberOfEquations(form)
{
if(parseInt(form.max1.value, 10) <= 10 && parseInt(form.max2.value, 10) <= 10)
{
if(!form.aRep.checked && parseInt(form.neqs.value, 10) > 12)
{
alert("Due to the value you just changed, the number of equations per page will be set to 12 only.");
form.neqs.value = 12;
}
else
{
if(parseInt(form.maxResult.value, 10) <= 5 && parseInt(form.neqs.value, 10) > 5)
{
alert("Due to the value you just changed, the number of equations per page will be set to 5 only.");
form.neqs.value = 5;
}
if(parseInt(form.maxResult.value, 10) <= 10 && parseInt(form.neqs.value, 10) > 10)
{
alert("Due to the value you just changed, the number of equations per page will be set to 10 only.");
form.neqs.value = 10;
}
if(parseInt(form.neqs.value, 10) > 30)
{
alert("Due to the value you just changed, the number of equations per page will be set to 30 only.");
form.neqs.value = 30;
}
}
}
if(parseInt(form.neqs.value, 10) > 50)
{
alert("Value overflow: the max number of equations per page is 50.");
form.neqs.value = 50;
}
}
function checkMinimumValue(form)
{
if(parseInt(form.min1.value, 10) <= 0)
{
alert("Minimum value should be 1.");
form.min1.value = 1;
}
if(parseInt(form.min2.value, 10) <= 0)
{
alert("Minimum value should be 1.");
form.min2.value = 1;
}
if((parseInt(form.max1.value, 10) - parseInt(form.min1.value, 10)) < 5)
{
alert("The difference between A-Max and A-Min shouldn't be less than 5.");
form.min1.value = parseInt(form.max1.value, 10) - 5;
}
if((parseInt(form.max2.value, 10) - parseInt(form.min2.value, 10)) < 5)
{
alert("The difference between B-Max and B-Min shouldn't be less than 5.");
form.min2.value = parseInt(form.max2.value, 10) - 5;
}
}
function checkMaximumValue(form)
{
if(parseInt(form.max1.value, 10) < 10)
{
alert("Value underflow: the maximum of A-max is 10.");
form.max1.value = 10;
}
if(parseInt(form.max2.value, 10) < 10)
{
alert("Value underflow: the maximum of B-max is 10.");
form.max2.value = 10;
}
if(parseInt(form.max1.value, 10) > 10000)
{
alert("Value overflow: the maximum of A-max is 10000.");
form.max1.value = 10000;
}
if(parseInt(form.max2.value, 10) > 10000)
{
alert("Value overflow: the maximum of B-max is 10000.");
form.max2.value = 10000;
}
if((parseInt(form.max1.value, 10) - parseInt(form.min1.value, 10)) < 5)
{
alert("The difference between A-max and A-min shouldn't be less than 5.");
form.max1.value = parseInt(form.min1.value, 10) + 5;
}
if((parseInt(form.max2.value, 10) - parseInt(form.min2.value, 10)) < 5)
{
alert("The difference between B-max and B-min shouldn't be less than 5.");
form.max2.value = parseInt(form.min2.value, 10) + 5;
}
}
function checkMaximumResult(form)
{
var result = parseInt(form.max1.value, 10);
if(result < parseInt(form.max2.value, 10)) result = parseInt(form.max2.value, 10);
if(result > parseInt(form.maxResult.value, 10))
{
alert("WARNING ---\n\nDue to the current setting of A-max and B-max, we suggest you to change the R-max value to at least " + result + ".");
// form.maxResult.value = result;
}
if(parseInt(form.maxResult.value, 10) < 5)
{
alert("Value underflow: the minimum of R-Max is 5.");
form.maxResult.value = 5;
}
checkNumberOfEquations(form);
}