File: exprForm/formValidated.js

//<!-- ###### EDIT THIS javascript TO CUSTOMISE THE FORM  -->
/*
	set_file
	chk
	validate
	setDispFld
	doExecute
*/

function set_file(form,src,target){
	form.elements[target].value = form.elements[src].value;
} //set_file

function chk(obj){
	var opt_node;
	if (obj.nodeName.toLowerCase() == 'select'){
		opt_node = obj.name+'_opt';
		obj.form.elements[opt_node].value = obj.options[obj.selectedIndex].text;
	}
	else {
		opt_node = obj.parentNode.name+'_opt';
		obj.form.elements[opt_node].value = obj.text;
	}
} //chk

function validate() {
  return true;
} //validate

function setDispFld(form,fld,val){
	sel = form.elements[fld];
	sel.value = val;
	psel = sel.parentNode;
	// as a default, formDef.xsl create a div section:
	div1 = psel.getElementsByTagName("div")[0];
	if (div1 != undefined)
		psel.removeChild(div1);
	// create a span section
	div2 = psel.getElementsByTagName("span")[0];
	if (div2 != undefined)
		psel.removeChild(div2);
	div2 = document.createElement("span");
	div2.innerHTML = val;
	psel.appendChild(div2);
	return div2;
} //setDispFld

function doExecute(form,v1,v2,op,disp_fld)
{
	var res;
	var var1 = Number(form.elements[v1].value);	// variable 1 value
	var var2 = Number(form.elements[v2].value);	// variable 2 value
	var vop = form.elements[op+'_opt'].value;	// selected operation
	//alert('doExecute: '+v1+'--'+var1+'--'+v2+'--'+var2+'--'+vop);
	switch(vop){
		case '+':
		res = var1+var2;
		break;

		case '-':
		res = var1-var2;
		break;

		case '*':
		res = var1*var2;
		break;

		case '/':
		res = var1/var2;
		break;
		
		default:
		res = 0;
	}
	// create a display field near disp_fld
	//alert('doExecute: '+res+'--'+disp_fld);
	setDispFld(form,disp_fld,res);
	
} //doExecute